Circuit-changing switch



March 9 1926. 1,576,406

H. T. BRooKER CIRCUIT CHANGING SWITCH- Filed April ll. 1924 2 Sheets-Sheet 1 f' tf" INVENTOR March 9 1926. 1,576,406 H. T. BROOKER CIRCUIT CHANGING SWITCH Filed April ll, 1924 2 Sheets-Sheet 2 HENRY THe/VIAS `Roo/(ER /NvE/v-roR ATToR/vfys L yreceivnrgL Se ii?nem'aetlft/Im. 9, 1926;-

To aZZV-whnfz'tmay condanna ention ',relate's tfo'filnprovernents Alilie..teleiihonesiareln ,parallehftlie magnitude ofthe aiidb'le signalsis n'otso great as 4v vh'en arranged fin series, Y. and` When the telephones @areoflfrying resi'stance/sfthe greater resist- 'me#ennemiestake,pw@normen1more votfftlifeff,cliIffrfeni', Lthus lessenin'g the magnitude ,the audible; k'signals giveno by' the vvs'fealrer .i l@n @rende-; l

v r 'agcirei'iit chang' ,t ,nf i dresmll 'W da c ccor e in gto'the present'nvention loe- IIgILOted for simplicity of `construeton and' logs'v f inanifacturng *economies enatime ,h- Y

:below thatnowycharged forcircuit ,D n@ switches ofthe accessory onsmall l sis :as disfngiiished from circuit' @switchesdesigned-ffQf'heampowef requirements j Thusethe present `i5nvention 'is :suited ,ase-eng;

' Br the invent-ion comprises a l.circuit 1.15? v na eoo rates with al .ffiXed 'ternnnaL Vso t 1 nnil` are in 'the forinnf a'twdpart aiing'a sprngkcontrll'ed sliding inf'iircit "changing sW'ftehes or Contact t l y sectional [elevation of the e switcliboard,"l4`ig. plan and Fig. 45 an und-er A?, plan gthereoi."

ss,y ithe. circuit changing f product "tofbe marketed at a' price with "in which "aAlf moyablelterininals the monaldle" terminals Aloze plug,rk or lpln orspade or .equivalent ter1nna1S.-.

The SLCCODlpanynggdran/ingsfshoWby Way y ,of example afforln oit' circuit oh-angngfswitch W illig. is a vsectional Avdetail View (of :thexed eleyation ,'th-ere'of.v Fig.v 8 lisv ai variant form or' ,s'wtclfiboard, r and 1Fig.,f9 adorna ofjter'- frnnal disc", component yfor use therewith. ig. lO'slan under' planvewgofllig. i

,diagram sheving two Y6 5 minimi, :'Fig. 6 a plan new, rief? an ,Q

Y It is tobe -lunderstood thattheswitohboard A,

shown'by Way Aof yeXanriloleis arrangedffor four pairs offteleph'ones, Vbut 'by the `provisonof more terminals, forexample,.two

vadditional,terminalsoneaeliside, eight'tele- .phones :may 'be used. ,Thetotalnurnberused depends Lon `the' capacityof Ythe Wirelessset in use.

Referringto Fig. linthis Wrngrliagrain f `vthe terminals ,-1K-andf2 'are connectedto the appropriate-,parts of'lthe receiving circuit.

The terminal ll Vis metallically connected by a strip `3 to the outerlixed. terminal 4, and

Vthe terminal .2 .is vJfnetallicvtlly .connected by astrip .5.10 the outer .fixed `kterininald.v The telephonesraretninse isas vfollows, viziter- Yblade 11, fixed terminal .8, kblade 12fixed terminal 9bladel 13, kf'r-'Xediterininal1,6, stripk i telephones-theseare placed nlseries circuit i aSOIlbWS.; YTheV lterminals .14e andmlzo'f the telephonejl ,remain in'contact'Wtlrthe t W Y Y terminallsgtandf respectively. f torm of the invention ,the

Theltele hone "17 has 1 one terminal 1:8` connected to the .terminal 7andone ,terminal 19 vconnected, to .the.tern1nall8. .o 1 j n' y .Inordertogettlie .telephones- Ain seriesit :if isnecessaryto cut outthe blade Il, and this e cuit, the patlrof this circuit being as hereinisleffected by the'terminal 19'Ywhe`n this is inserted 'in the fixed terminal'8. The series.

circuitH is 'thenifrom 1 to 2fthrough 3, 4, v121,

15, 1e, 7,18, 17,19, 8,12, 9,1acandx5' Y* The telephonesfmay -be inserted between any cooperating'-fpairiDLiXedzterminals' and it is'not necessary to start between ,the terminalsll and 7 and ollowfonas described.V One form of telephone terminal particu- L v10l 'i I `hereinafter described Viso-the-pin type.'-

larly suited for use with the iXediter-minals i jfReferring to Figs.` 2 to 71j'inclusiveof the a'ccompanyingf.V drawings, afswitchboard 20 has mounted thereon fsp'ring grip terminals 'to blade pieces` 10, 11",V 1 2landg13respectively 'andthe terminals 4 andr are metallically connected'by-screws 21 and 21a respectively to the strips 3 andleading tothe terminals sliding component in contact-, with' thegsta` i' r'eceiving', the movable .pin terminalsY (14 etc.,) i ofrthe'telephones.f 26 isa vblind-ended Eachof the sliding-components.23 ofthe terminals 758,19 and 6 bears'at the appro- -priatesidefonan insnlating stud or pin 29, "theother end'iof -thel stud atA the Vterminal resting on the bla-de 10.V 'The stud at terminal '8 rests on thefblade 11, that at' 9 on the blade 12,and tl1e stud zat 'on the 'blade v 13.7j kW'hen' only'onepair of telephonesare in use the'terminal lthereof is'linsert'ed `for example 'as shown betweenfthe'grip com-f ponents v22*v andf23` 4of theterminal '4t and the terminal 16 is insertedin like `manner atthe terminal?` and thecircuitiis as 'herein-V 1 "before described. The yinsertion of the terminal 1 6 betweenthewgrip componentsf of:v the" terminal will skew' or v cant` over the I sliding lcomp'orientl 2Biand move down the close the lcircuit througl115, yNow asstimingfthatgno 'PhOles'lT'is to be used.V 4'. e

55 y"One'terminal 180i the /telephone'vlwill' insulating studf''29" a stiiiicient" distance to movethebl'ade 10away from the contacting screw-.21 with which .it normally engages" andv thus break. the Vcircuit yfrom 10`to l"(',"and

ther pair "of i telefbe connected for eXample to the/terminal 7v and/the other terminal 19 t'othe'terminali. f Th'einsertion o'- the 4 terminal" 19 ,between stud 29 a sufficient'distance tomove the'blade thegrip components "ofthe terminal"8,`-will j skew or canti-over the slidingcomponentl 23 thereof and move `down the insulating.

11 away' romits contacting screws 2l-so as to'close the two pair, telephone Vseriescrmovable terminal cooperating therewith,

minal causing the slidingeomponent -therelfixed 4terminal Vfor the"'pur'pose 'of "est Viixedjterminal causing thefsliding'licom Y ber Asolas to 'breakl connection "between t ViiXed terminal "and, a t

said fined terminal consistingjo'fd a; 1st

vmember controlled by said slidingcompobefore'set out. On the removal of the ter;4

minals 16 andf19 the Aspring 24A vreturns the. sliding component to `normal `p 'cfisition and` i fthe springiness of the' blades 9 and-'10 push" the insulating` studs 29.,backA and Contact 'madeV Vbetween vthe saidgblades and theirco-A operating screws.' A f It will be noted that the terminals 4f etc.,

are common to each circuit, 'that is to say,f

Y'Whichever circuit isclosed,'thefclv1rrent passes through theseterm1nals-- Figg isay planoi:

a cirei'llar 4form cuit changing switchandllig.- 49 ak planef the xedz disc or wa'shfer of the iXe-diter'xninal showing' thereceiving giooves25 for the pinl I terminals setv angularly to one another, ,sof that 'on insertion ofl'a, pair oftelephone te'fl minals between the Vco'-operating ixe. termi` nals, the. telephone terminals willwbeY 'dis-` posed fin parallelism'. This 4 n revents ,u rfclue4 str-ain between the telephone f terminal and V'the 'iiexible connector 'connected thereto, i D yWhat I claimfisiff"V i 1 i L An'2 electric connecting `devi`c e' opera ing'asa circuit 'changing SYVitcli,'compriVv ing combination, a fixed terminal. Vand' said xed terminal consisting'of4 two co ponents o ne'having a sliding movement rel# Vatively to the other, and anjinsulating 'i` n'e 'n ber controlled by .said ,sliding componen the insertion of the vmovable]ter minel b twee'nthe two components oftheiiXed'te minal for the purpo"se' v of' establishin 'a other circuit connectionwith said iXe 'te of to@y movey the insulatingmeinber so asto break f ,f'onne'ctionV between vthefffiired terminal and fa contact piece inA thek normaleircui `2.An"lelectric` connecting, devicefopera ingas a' circuit changing switch'fcoinpri ing in combination, aiixed terminaland a, movablev terminal cci-operating therewit said vfixed terminal consisting of a'statio ary 'component and af sliding componen y and al1-insulating member controlledbyvs" d sliding component, the insertionrof themo able terminal betweenthe;A stationary. c o i ponent and theVA sliding- Vce mpone'l'itV` of "t lishingr;k another` circuit connection withfsai'd nent thereof to move Vthe insulatin'g'me normal circuit.

a 'movable' terminal cooperating therewith`l tionary component and slidingfcomponen a spring control therefor, and aninsulating @mathe insertion ,of the mqvablftermiel betvven thel stationarycomponent vand the sliding component'o the fixed terminal for "the'purpose'of establishing another circuit connection with said`f-xed' terminal causing 'the` sliding Component thereof to move the insulating member so 'as ito break connection betweenftlie X'ed termmaland a con 'tact-kplece'ingthe normal circult.

V4.An electric `connecting device 'operatl ring las -aicircnitchanging switch comprising in combination, a fixed terminal anda movable terminal," (3o-operating therewith,

said iXed `,terminal consisting vof a `'station- .i ary component and* a ksliding component,A

means on one of said components for receiving said movable terminal, and an insulating member controlled by said sliding component, the insertion of the movable terf minal betv'veen'the stationaryl componentandthe sliding component of the xed terminal,V for the purpose of establishing another circuit connection with saidy xed terminal' causing4 the slidingl component thereof to move the insulatingmember so as .to break connection between the fixed terminalk and a Contact piece in the normal circuit. l

VIn testimony ture. f

\ VHENRY THOMAS BRooKER.

whereof, I aiX'myV signa- 

